ES396017A1 - System of thermal regulation of a plurality of electric ovens. (Machine-translation by Google Translate, not legally binding) - Google Patents

System of thermal regulation of a plurality of electric ovens. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES396017A1
ES396017A1 ES396017A ES396017A ES396017A1 ES 396017 A1 ES396017 A1 ES 396017A1 ES 396017 A ES396017 A ES 396017A ES 396017 A ES396017 A ES 396017A ES 396017 A1 ES396017 A1 ES 396017A1
Authority
ES
Spain
Prior art keywords
heating
translation
legally binding
google translate
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES396017A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of ES396017A1 publication Critical patent/ES396017A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1917—Control of temperature characterised by the use of electric means using digital means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)

Abstract

Thermal regulation system of a plurality of electric furnaces comprising, associated with each electric furnace, a cell that includes a heating circuit formed by an electrical resistance fed with alternating current and by a heating control thyristor of said resistance and a probe thermometer, and a central control and monitoring unit that includes a reference potentiometer that serves to set the reference temperature common to all electric furnaces and means to control the opening of the thyristors according to the signals supplied by the thermometric probes, characterized in that said means comprise a differential measuring amplifier connected in one of its inputs with the reference potentiometer and switching means that allow it to be fed successively, during successive temporary spaces forming part of an overall time interval with a duration small in relation to the period of the co alternating current of heating and whose origin has a predetermined delay in relation to each zero of intensity of said current the thermometric probes and connect during these temporary spaces the second input of the differential measuring amplifier successively to the heating control thyristors to apply pulses of heating control. (Machine-translation by Google Translate, not legally binding)
ES396017A 1970-12-30 1971-10-15 System of thermal regulation of a plurality of electric ovens. (Machine-translation by Google Translate, not legally binding) Expired ES396017A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7047215A FR2120323A5 (en) 1970-12-30 1970-12-30 Textile treatment oven control circuit - for controlling the heating of several electric ovens

Publications (1)

Publication Number Publication Date
ES396017A1 true ES396017A1 (en) 1974-04-01

Family

ID=9066553

Family Applications (1)

Application Number Title Priority Date Filing Date
ES396017A Expired ES396017A1 (en) 1970-12-30 1971-10-15 System of thermal regulation of a plurality of electric ovens. (Machine-translation by Google Translate, not legally binding)

Country Status (4)

Country Link
BE (1) BE773632A (en)
DE (1) DE2165768A1 (en)
ES (1) ES396017A1 (en)
FR (1) FR2120323A5 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040724A (en) * 1989-12-11 1991-08-20 Eaton Corporation Electronic control system for an oven

Also Published As

Publication number Publication date
DE2165768A1 (en) 1972-07-20
FR2120323A5 (en) 1972-08-18
BE773632A (en) 1972-04-07

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